Finding the Fourth Proportional to 638,353,501.80, 957,530,252.70 and 153,679,309.80
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Solution
The fourth proportional to 638,353,501.80, 957,530,252.70 and 153,679,309.80 is: 230,518,964.70
Step by Step Solution
- Step 1: Write the proportion equation
638,353,501.80 : 957,530,252.70 = 153,679,309.80 : x - Step 2: Convert to fraction form
638,353,501.80/957,530,252.70 = 153,679,309.80/x - Step 3: Cross multiply
638,353,501.80x = 957,530,252.70 × 153,679,309.80 - Step 4: Simplify right side
638,353,501.80x = 147,152,588,347,555,616 - Step 5: Solve for x
x = 147,152,588,347,555,616/638,353,501.80 - Step 6: Final answer
x = 230,518,964.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.